what is launcher in android ?

• this time a post about android launchers and how to used or not used launchers.
• so let's start....

Launchers in android 

• Some people asked questions what is launchers or i am used in android.
•  So my answer is yes ,
• you can customize android to used some launchers and also used additional features for android.
• lick some examples 
1. 1.  used batter customize app style .
2. 2.  used additional gestures lick swipes clicks.
3. 3.  batter themes to used other smartphones systems.
4. 4.  fast to used android.
• some disadvantages is lick more power and load consuming .
• some time android is hang and speed down to used launchers.